2 Kings 15:24

And he did that which was evil in the sight of the Lord: he departed not from the sins of Jeroboam the son of Nebat, who made Israel to sin.

Cross-reference

2 Kings 15:9 uses identical wording for Zechariah's evil—showing the repeated pattern of Israel's kings not departing from Jeroboam's sins.

2 Kings 15:18 says Menahem did the same evil—so Pekahiah followed his father's footsteps in sin.

2 Kings 10:29 specifies Jeroboam's sins as the golden calves at Bethel and Dan—the sins Pekahiah did not turn from.

2 Kings 17:2 says Hoshea did evil but not like previous kings—a contrast showing Pekahiah was among the worst.